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Anti-lock light, need help diagnosing (Long)
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Posted by JohnSE (more from JohnSE) on Fri, 20 May 2005 04:25:26 Share Post by Email
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The anti-lock light (the yellow one) comes on intermittantly on my daughters 93 900s (auto, 123K). Recently both lights were coming on (brake and anti-lock) and I replaced the accumulator (the bomb) because both lights would come on after one or two pumps of the brake. That is now fixed and I can get at least 10 pumps of the brake before the lights come on and the brake pumnps starts to whir.

I have cleaned all (4) abs sensors (they were pretty gummed up) and now the anti-lock light still comes on intermittantly. Some times it will stay on all the time and some times (not very often) not at all. Besides cleaning the sensors I have also cleaned all of the electrical connectors that I can find (including the big one that plugs into the ABS block on the fender wall)

I have the following questons:

1. How do I check to see if the sensors are OK?

2. How do I read the "codes" from the ABS ECU.

Any help with a diagnosis would be great, I am almost at the point of taking it to my Indy.

Any help would be really appreciated.

JohnSE

99 9-5SE Auto 89K
95 900S CV 5SP 128K
93 900S Auto 123K

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